Molekula
2,2-Diphenyl-1-(2,4,6-trinitrophenyl)hydrazinyl (C18H12N5O6)
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
2,2-Diphenyl-1-(2,4,6-trinitrophenyl)hydrazinyl, commonly known as DPPH, is a stable free radical used as an analytical reagent in antioxidant (radical-scavenging) assays, as an EPR/ESR spin standard, and as a radical trap and inhibitor. It is a crystalline solid with a molecular formula of C18H12N5O6, a molecular weight of 394.32 g/mol, and a CAS number of 1898-66-4. It must be stored at 2 to 8 °C and is classified as Danger.
Molekula supplies 2,2-Diphenyl-1-(2,4,6-trinitrophenyl)hydrazinyl (C18H12N5O6) at ≥97.0% purity in 250 mg and 1 g packs, from £37.08 inc. VAT. It is in stock for same-day dispatch. Every batch ships with a certificate of analysis, and safety data sheets are available in 7 languages. Larger quantities, up to multi-tonne, are quoted on request.
Example image for illustration only. Other packaging and pack sizes are available.
Often bought together
Pricing & pack sizes
In stock — same-day dispatch
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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250 mg — £30.90 per pack ex VAT · £37.08 inc. VAT
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1 g — £110.00 per pack ex VAT · £132.00 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Green/Black/Purple powder |
| Melting Point | ~135 ºC |
| Purity | ≥97.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | 2 to 8 °C |
| Flash Point | 74 °C |
| Transport Class | 4.1 |
| Acidity | Acid |
For research use only. Not for human use.
Identification
| Property | Value |
|---|---|
| SKU | 89995998 |
| CAS Number | 1898-66-4 |
| EC Number | 217-591-8 |
| Molecular Formula | C18H12N5O6 |
| Molecular Weight | 394.32 |
| Exact Mass | 394.0788 |
| SMILES | C1=CC=C(C=C1)N(C2=CC=CC=C2)[N]C3=C(C=C(C=C3[N+](=O)[O-])[N+](=O)[O-])[N+](=O)[O-] |
| InChIKey | HHEAADYXPMHMCT-UHFFFAOYSA-N |
| InChI | InChI=1S/C18H12N5O6/c24-21(25)15-11-16(22(26)27)18(17(12-15)23(28)29)19-20(13-7-3-1-4-8-13)14-9-5-2-6-10-14/h1-12H |
| PubChem CID | 2735032 |
| UN Number | UN3224 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2928.00.2500 |
| Tariff Code | 2928009090 |
Safety & GHS
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Flammable
GHS02
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Health Hazard
GHS07
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Serious Health Hazard
GHS08
Hazard statements
- H242 Heating may cause a fire
- H302 + H312 + H332 Harmful if swallowed, in contact with skin or if inhaled
- H315 Causes skin irritation
- H317 May cause an allergic skin reaction
- H319 Causes serious eye irritation
- H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled
Precautionary statements
- P210 Keep away from heat/sparks/open flames/hot surfaces - No smoking
- P235 Keep cool
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P309+311 IF exposed or you feel unwell: Call a POISON CENTER or doctor/physician
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Russian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
- 1,1-Diphenyl-2-picrylhydrazyl (free radical)
- 1,1Diphenyl2picrylhydrazyl radical
- 2,2Diphenyl1(2,4,6trinitrophenyl)hydrazinyl
- 2,2Diphenyl1(2,4,6trinitrophenyl)hydrazyl
- 2,2Diphenyl1picrylhydrazyl
- Hydrazinyl, 2,2-diphenyl-1-(2,4,6-trinitrophenyl)-
- Hydrazyl, 2,2-diphenyl-1-picryl-
- Hydrazyl, 2,2diphenyl1(2,4,6trinitrophenyl)
- N,NDiphenylN'picrylhydrazyl
Frequently asked questions
What is 2,2-Diphenyl-1-(2,4,6-trinitrophenyl)hydrazinyl used for?
This compound, known as DPPH, is a stable free radical primarily used in antioxidant (radical-scavenging) assays, as an EPR/ESR calibration standard, and as a radical trap and radical polymerization inhibitor.
What is the chemical formula and molecular weight?
The formula is C18H12N5O6 with a molecular weight of 394.32 g/mol.
How should this compound be stored?
Store at 2 to 8 °C in a cool, dark place, protected from light and moisture.
What grade is available?
It is supplied with a purity of ≥97.0%.
Can Molekula supply this in bulk?
Yes, bulk quantities are available upon request; please contact our sales team for pricing and lead times.
What documentation comes with the order?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS); additional documentation can be provided upon request.
Where can I buy 2,2-Diphenyl-1-(2,4,6-trinitrophenyl)hydrazinyl (C18H12N5O6)?
Directly from Molekula, which lists 2,2-Diphenyl-1-(2,4,6-trinitrophenyl)hydrazinyl (C18H12N5O6) in 250 mg and 1 g packs from £37.08 inc. VAT, with a certificate of analysis for every batch. Larger quantities are quoted on request. Molekula's offices: United Kingdom, France, Spain, Germany, Italy, United States and China.
Is 2,2-Diphenyl-1-(2,4,6-trinitrophenyl)hydrazinyl (C18H12N5O6) dangerous goods for shipping?
Yes. 2,2-Diphenyl-1-(2,4,6-trinitrophenyl)hydrazinyl (C18H12N5O6) ships as dangerous goods: UN3224, class 4.1.
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